1-(2,4-Difluoro-5-(trifluoromethyl)phenyl)ethan-1-one CAS 1288987-92-7
| CAS No. | 1288987-92-7 |
| Molecular Formula | C9H5F5O |
| Molecular Weight | 224.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1-(2,4-Difluoro-5-(trifluoromethyl)phenyl)ethan-1-one (CAS 1288987-92-7), molecular formula C9H5F5O and molecular weight 224.13 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1-(2,4-Difluoro-5-(trifluoromethyl)phenyl)ethan-1-one (C9H5F5O) contains a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 224.13 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), 1-(2,4-Difluoro-5-(trifluoromethyl)phenyl)ethan-1-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C9H5F5O |
| Molecular Weight | 224.13 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F-containing |
Related Difluoro Standards
- 1-(3,5-Difluoro-4-(trifluoromethyl)phenyl)ethanone (CAS 1189359-39-4)
- 1-(2,4-Difluoro-3-(trifluoromethyl)phenyl)ethanone (CAS 1202679-46-6)
- 1-(2,6-Difluoro-3-(trifluoromethyl)phenyl)ethan-1-one (CAS 1202679-47-7)
- 1-(2,6-Difluoro-4-(trifluoromethyl)phenyl)ethan-1-one (CAS 1288987-71-2)
- 1-(2,3-Difluoro-4-(trifluoromethyl)phenyl)ethan-1-one (CAS 237761-82-9)
- 1-(2,6-Difluoro-4-nitrophenyl)cyclopropane-1-carbonitrile (CAS 1870348-49-4)
- 3,4-Difluoro-2-(hydroxymethyl)benzenesulfonic acid (CAS 887585-63-9)
- 1,2-Difluoro-8-(methoxymethoxy)naphthalene (CAS 2621935-27-9)
Recommended Standards
- 2-(Perfluoroethyl)benzaldehyde (CAS 133391-50-1)
- 2,4-dichloro-6-ethyl-7h-pyrrolo[2,3-d]pyrimidine (CAS 1275608-17-7)
- 3-(2,4-Difluorophenyl)-1,1,1-trifluoropropan-2-one (CAS 1343484-90-1)
- 4-Nitro-3-(4H-1,2,4-triazol-4-yl)-1H-pyrazole-5-carboxylic acid (CAS 1258002-57-1)
- 3-(2,6-Dichlorophenyl)propanenitrile (CAS 61698-06-4)
- 2-Bromo-N-hydroxy-6-methylnicotinimidamide (CAS 923288-61-3)
- n-Ethyl-2-(piperidin-4-yl)acetamide (CAS 521074-79-3)
- 2-(4-(Tert-pentyl)cyclohexyl)propanoic acid (CAS 1512012-57-5)
- (2-Phenyl-2H-1,2,3-triazol-4-yl)(3-(5-(thiophen-2-yl)-1,3,4-oxadiazol-2-yl)piperidin-1-yl)methanone (CAS 1219905-58-4)
- N-(4-Bromophenyl)-2-((3-(pyridin-3-yl)-1H-1,2,4-triazol-5-yl)thio)acetamide (CAS 332158-04-0)
- N-(3-Methylbutan-2-yl)piperidine-4-carboxamide (CAS 1038300-20-7)
- 1-(2-(2-(Cyclobutylamino)pyridin-3-yl)pyrrolidin-1-yl)ethanone (CAS 1352511-32-0)
- 2-(Methylsulfanyl)-6-(1H-pyrrol-1-yl)benzonitrile (CAS 862595-53-7)
- Semaglutide Impurity 167 (CAS CATO-C4X-2226167)
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